摘要
由于木材的各向异性性能,干缩将使木材产生顺纹裂缝,这种开裂现象在古建筑木结构中十分普遍。因此,在评定古木结构的承载力时无法回避裂缝的存在。通过数值模拟,研究了纵向裂缝对长木柱力学性能的影响。研究表明,裂缝的存在并不一定导致长木柱力学性能的下降;裂缝开展到一临界值时,长木柱力学性能开始下降,此时需采取相应的加固措施进行维护。
Due to the anisotropic properties of timber,shrinkage will produce cracks parallel to grain,this phenomenon is very common in the ancient timber structure.Therefore,in assessing the bearing capacity of the ancient timber structure,it’s unable to avoid the cracks.This paper,through numerical simulation,studied the mechanical behavior of long wooden columns with longitudinal cracks.Studies have shown that the existence of the crack does not necessarily lead to a decline in mechanical properties of long wooden columns;only when the crack development to a critical value,the mechanical properties began to decline,and it’s time to take appropriate reinforcement measures for maintenance.
作者
朱忠漫
Zhu Zhongman(Anhui Architectural Design and Research Institute Co.,Ltd.,Hefei Anhui 230601,China)
出处
《山西建筑》
2024年第5期45-47,156,共4页
Shanxi Architecture
关键词
长木柱
裂缝
失稳承载力
数值模拟
加固措施
long wooden columns
crack
bearing capacity
numerical simulation
reinforcement measures
